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TOEFL IELTS BNC: 5989 COCA: 9571
ascertain
verb [I/T] formal /ˌæsə(r)ˈteɪn/
present tense
I/you/we/theyascertain
he/she/itascertains
present participleascertaining
past tenseascertained
past participleascertained
  1. to find out something 弄清;查明

    Police are trying to ascertain the facts of the case. 警方正在设法查清这件案子的事实真相。

    ascertain whether/what/how etc :

    We need to ascertain whether the project is feasible. 我们需要弄清楚这项计划是否可行。

    ascertain that :

    The police have ascertained that he knew the victim. 警察已查明他认识受害者。

    ascertain from :

    This much could easily be ascertained from the newspapers. 这么多都能轻易地从报纸上查到。

    ascertain the cause/nature/extent of something :

    Experts were unable to ascertain the cause of the accident. 专家们无法查出事故原因。

     Synonyms and related words
TOEFL IELTS BNC: 5989 COCA: 9571
TOEFL IELTS BNC: 5989 COCA: 9571
ascertain verb
find3

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